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江南丘陵林区森林土壤微量元素的含量与分布
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摘要:
对我国江南丘陵林区森林土壤微量元素的含量,分布及影响因子进行了研究。结果表明:该地区森林土壤全量微量元素B,Zn,Mn等含量很低,Mo,Cu含量较高,Fe含量丰富,不同林分类型对土壤中微量元素全量不存在明显影响。
关键词:  江南丘陵林区 森林土壤 微量元素 临界值
DOI:
基金项目:
Contents and Distribution of Microelements in Soils of Hilly Forest Area in the South of Yangzi River
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Abstract:
This paper deals with the content level,the distribution regularity and the affecting factors of microelements (B,Mo,Cu,Zn,Fe,Mn) in soils of hilly forest area in the south of Yangzi River.Results revealed that the total contents of B,Zn,Mn in this region were lower than their average contents of the country,those of Mo,Cu were higher than their average contents of the country,but that of Fe was very rich.The total contents of microelements in the soils were mainly affected by parent materials and soil texture.Available B,Mo,Cu were very low,but available Zn was relatively high and available Fe and Mn were very rich.Distribution of available microelements in the soil layers varied with the kind of the elements.The factors affecting the available content of microelements in the soils were the total content,soil texture,pH,organic matters,available P and available K.The enrichment of organic matters increased available Cu,Zn,Fe,Mn contents greatly,but decreased available B contents and had no effect on available Mo contents.
Key words:  Forest areas in the south of Yangzi River Forest soils Microelements Critical level,

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